Household silicone and flour bags are not toxic.
The component of household silica gel and dough bags is silica gel. Silica gel has good biocompatibility, is non-irritating to human tissues, non-toxic, has no allergic reactions, and has minimal body rejection reactions; it has good Physical and chemical properties: It can maintain its original elasticity and softness when in contact with body fluids and tissues, and will not be degraded. It is a fairly stable inert substance. It can withstand high temperatures and can be sterilized.
The use of silica gel has the characteristics of strong adsorption, can quickly and effectively absorb moisture in sealed packages, stable chemical properties, non-toxic and harmless; coupled with continuous innovation and development in recent years, various silica gels have been widely used Drug purification, DNA separation, food drying, high-precision electronics, high-end cosmetics, sewage purification, beer purification, advanced coatings and resin production or preservation, etc.
Extended information:
Silica gel had been discovered by scientists as early as 1640. In 1919, Walter A. Patrick, a chemistry professor at Johns Hopkins University in the United States, applied for a production patent. It was used as an absorbent in gas masks during World War I.
Silica gel that has absorbed water can be regenerated by heating it at 120°C for two hours. Silicone is sometimes called silica gel, but is actually a silicon-containing compound with completely different properties and uses.
In daily life, silica gel is often encountered in certain paper bags or bags made of semi-permeable membrane resin. It is used to absorb water, control humidity, and prevent the deterioration of certain items. Silicone bags usually have "Do Not Eat" written on them.
Baidu Encyclopedia - Silicone